Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030682AbWK3QRW (ORCPT ); Thu, 30 Nov 2006 11:17:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S967836AbWK3QRW (ORCPT ); Thu, 30 Nov 2006 11:17:22 -0500 Received: from iriserv.iradimed.com ([69.44.168.233]:47851 "EHLO iradimed.com") by vger.kernel.org with ESMTP id S967837AbWK3QRV (ORCPT ); Thu, 30 Nov 2006 11:17:21 -0500 Message-ID: <456F0432.8010203@cfl.rr.com> Date: Thu, 30 Nov 2006 11:17:54 -0500 From: Phillip Susi User-Agent: Thunderbird 1.5.0.8 (Windows/20061025) MIME-Version: 1.0 To: "linux-os (Dick Johnson)" CC: Jun Sun , linux-kernel@vger.kernel.org Subject: Re: failed 'ljmp' in linear addressing mode References: <20061122234111.GA8499@srv.junsun.net> <20061127231646.GA21627@srv.junsun.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 30 Nov 2006 16:18:16.0082 (UTC) FILETIME=[240F5720:01C7149B] X-TM-AS-Product-Ver: SMEX-7.2.0.1122-3.6.1039-14844.003 X-TM-AS-Result: No--7.276500-5.000000-31 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 746 Lines: 17 linux-os (Dick Johnson) wrote: > Get a copy of the Intel 486 Microprocessor Reference Manual or read it on- > line. There is no way that you can make a call like that. You would need to > call through a task-gate or otherwise set the code-segment and the instruction > pointer at the same instant. First, look at the startup code for a GDT entry Setting the code segment and instruction pointer at the same time is exactly what the long jump does. OP: What is at the linear address 0x10000000? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/